physical education. n. (Education) training and practice in sports, gymnastics, etc, as in schools and colleges. Abbreviation: PE. physâ²ical educaâ²tion. n. instruction in sports, exercise, and hygiene, esp. as part of a school or college program.
3. Stress/injury. Stress on the tissues or any type of injury in the mouth can cause canker sores. Since the sores are actually tiny ulcers, they can be caused by any kind of hard brushing or eating something that can cause bruises or lead to tissue inflammation in the mouth.
Infection. Infections caused by fungi and viruses can potentially cause swollen gums. If you have herpes, it could lead to a condition called acute herpetic gingivostomatitis, which causes swollen gums. Thrush, which is the result of an overgrowth of naturally occurring yeast in the mouth, can also cause gum swelling.